Series 63 heat insulation leveling system

Doors and Windows system

Basic structure width 63mm
External fan frame flush, internal fan frame holder
Large volume front cavity and middle sealing strip
Frame fan corner code and corner piece all use a convenient and fast
There are many colors to choose from. The inner color is different from the outer color
Standard window opening forms: flat to the inside, flat to the bottom hanging, flat to the outside, on.